1、BS EN1264-3:2009ICS 91.140.10NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDWater based surfaceembedded heating andcooling systemsPart 3: DimensioningThis British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 Se
2、ptember 2009 BSI 2009ISBN 978 0 580 59452 6Amendments/corrigenda issued since publicationDate CommentsBS EN 1264-3:2009National forewordThis British Standard is the UK implementation of EN 1264-3:2009. It supersedes BS EN 1264-3:1998 which is withdrawn. Together with BS EN 1264-4:2009, it also super
3、sedes BS EN 15377-2:2008 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee RHE/6, Air or space heaters or coolers without combustion.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does n
4、ot purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN 1264-3:2009EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1264-3September 2009ICS 91.140.10 Su
5、persedes EN 1264-3:1997, EN 15377-2:2008 English VersionWater based surface embedded heating and cooling systems -Part 3: DimensioningSystmes de surfaces chauffantes et rafrachissanteshydrauliques intgres - Partie 3 : DimensionnementRaumflchenintegrierte Heiz- und Khlsysteme mitWasserdurchstrmung -
6、Teil 3: AuslegungThis European Standard was approved by CEN on 1 August 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and biblio
7、graphical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a
8、 CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, I
9、taly, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 B
10、russels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1264-3:2009: EBS EN 1264-3:2009EN 1264-3:2009 (E) 2 Contents Page Foreword 31 Scope 42 Normative References .43 Terms, definitions and symbols .44 Heating systems 54.1 Floo
11、r heating systems .54.1.1 Basic principles .54.1.2 Boundary conditions .64.1.3 Design .74.1.4 Peripheral areas .94.2 Ceiling heating systems 94.2.1 Basic principles .94.2.2 Boundary conditions 104.2.3 Design 104.3 Wall heating systems . 114.3.1 Basic principles 114.3.2 Boundary conditions 114.3.3 De
12、sign 115 Cooling systems . 125.1 General . 125.1.1 Basic principles 125.1.2 Temperature differences 125.1.3 Regional dew point and standard indoor room temperature . 125.1.4 Temperature difference between room and cooling water 125.1.5 Characteristic curves . 135.1.6 Field of characteristic curves 1
13、35.1.7 Limit curve . 135.1.8 Thermal insulation 135.2 Design 135.2.1 Design value of specific cooling load 135.2.2 Determination of the design flow (inlet) temperature and the design specific thermal output . 135.2.3 Determination of design cooling water flow rate 15Annex A (normative) Figures 16BS
14、EN 1264-3:2009EN 1264-3:2009 (E) 3 Foreword This document (EN 1264-3:2009) has been prepared by Technical Committee CEN/TC 130 “Space heating appliances without heat sources”, the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either by
15、publication of an identical text or by endorsement, at the latest by March 2010, and conflicting national standards shall be withdrawn at the latest by March 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC
16、 shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1264-3:1997. Together with EN 1264-4, this document also supersedes EN 15377-2. The series of European Standards EN 1264 “Water based surface embedded heating and cooling systems“ consists of th
17、e following parts: Part 1: Definitions and symbols; Part 2: Floor heating : Prove methods for the determination of the thermal output using calculation and test methods Part 3: Dimensioning; Part 4: Installation; Part 5: Heating and cooling surfaces embedded in floors, ceilings and walls Determinati
18、on of the thermal output. The main change with respect to EN 1264-3:1997 is the expansion of the scope beyond floor heating, with the addition of ceiling and wall heating as well as cooling surfaces in floors, ceilings and walls. According to the CEN/CENELEC Internal Regulations, the national standa
19、rds organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Por
20、tugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 1264-3:2009EN 1264-3:2009 (E) 4 1 Scope This European Standard applies to heating and cooling systems embedded into the enclosure surfaces of the room to be heated or to be cooled. This document deals with t
21、he use in practical engineering of the results coming from part 2 and 5 and is applicable to floor-, ceiling- and wall heating systems, as well floor-, ceiling- and wall cooling systems. For heating systems, physiological limitations are taken into account when specifying the surface temperatures. I
22、n the case of floor heating systems the limitations are realised by a design based on the characteristic curves and limit curves determined in accordance with part 2 of this Standard. For cooling systems, only a limitation with respect to the dew point is taken into account. In predominating practic
23、e, this means that physiological limitations are included as well. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced docu
24、ment (including any amendments) applies. EN 1264-1:1997, Water based surface embedded heating and cooling systems - Part 1: Definitions and symbols EN 1264-2, Water based surface embedded heating and cooling systems - Part 2: Floor heating: Prove methods for the determination of the thermal output u
25、sing calculation and test methods EN 1264-4, Water based surface embedded heating and cooling systems - Part 4: Installation EN 1264-5, Water based surface embedded heating and cooling systems Part 5: Heating and cooling surfaces embedded in floors, ceilings and walls Determination of the thermal ou
26、tput EN 12831, Heating systems in buildings Method for calculation of the design heat load EN 15243, Ventilation for buildings Calculation of room temperatures and of load and energy for buildings with room conditioning systems EN ISO 7730, Ergonomics of the thermal environment - Analytical determin
27、ation and interpretation of thermal comfort using calculation of the PMV and PPD indices and local thermal comfort criteria (ISO 7730:2005) 3 Terms, definitions and symbols For the purposes of this document, the definitions and symbols given in EN 1264-1:1997 apply. BS EN 1264-3:2009EN 1264-3:2009 (
28、E) 5 4 Heating systems 4.1 Floor heating systems 4.1.1 Basic principles 4.1.1.1 Temperature difference between heating water and room The temperature difference between the heating water and the room is calculated using equation (1), see EN 1264-2. In this equation, the effect of the temperature dro
29、p of the heating water is taken into account. iRiVRVHln= (1) 4.1.1.2 Characteristic curve The characteristic curve describes the relationship between the specific thermal output q of a system and the required temperature difference between heating water and room H. For a simplification, the specific
30、 thermal output is taken directly proportional to the temperature difference: q = KH H(2) where the gradient is KH= B )(iimia , calculated in accordance with clause 6 of part 2 of this Standard, or the gradient KHis experimentally determined in accordance with clause 9 of part 2 of this European Sta
31、ndard. 4.1.1.3 Field of characteristic curves The field of characteristic curves of a floor heating system with a specific pipe spacing T shall at least contain the characteristic curves for values of the thermal resistance R, B= 0, R, B= 0,05, R, B= 0,10 and R, B= 0,15 (m2K)/W in accordance with pa
32、rt 2 of this European Standard (see Figure A.1). Values of R, B 0,15 (m2K)/W shall not be used if possible. 4.1.1.4 Limit curves The limit curves in the field of characteristic curves describe in accordance with part 2 of this European Standard the relationship between the specific thermal output q
33、and the temperature difference Hbetween the heating water and the room in the case where the physiologically agreed limit values of surface temperatures F,max= 29 C (occupied area) or F,max= 35 C (peripheral area) are reached1. For bathrooms (i= 24 C) the limit curve for (F,max- i) = 9 K also applie
34、s. For design purposes, i.e. the determination of design values of the specific thermal output and the associated temperature difference between heating water and room, the limit curves are valid for the temperature drop of the heating water in a range of 0 K 0,5 the following equation has to be use
35、d: des,H2des,Hdes,V122 += (9) The result of Equation (8) or (9) provides the design flow temperature V,des= V,des+ i. For all other rooms operated at the same flow temperature V,des, for the ratio /H,j 0,5 the associated values for the temperature drop jof the heating water are taken from the field
36、of characteristic curves (see Figure A.4) or calculated according to j,Hdes,Vj2=(10) using the temperature differences H,jcorresponding to the respective values of the specific thermal output qj(see Figure A.4). For /H,j 0,5 the temperature drop jhas to be calculated as follows: ()+= 1341321j,Hj,Hde
37、s,Vj,Hj(1) Note: Equations (8) and (10) are the result of simplifications and therefore valid only under the specified condition /H 0,5. Compared to this, equations (9) and (11) generally are applicable, i.e. for any relationship /H. If the value qdesaccording to equation (5) for the room used for d
38、esign (or for other rooms if the case arises) cannot be obtained under the aforementioned conditions by any pipe spacing, it is recommended to include a peripheral area or to provide supplementary heating surfaces. The supplementary heating surfaces shall be selected complying with the purpose and t
39、he location. The additional required thermal output Qoutis determined with the following equation: Qout= QN,f QF(12) In this case, the maximum specific thermal output qmaxnow may occur in another room. 4.1.3.3 Heating Mode - Determination of Water Flow rate The total thermal output of a floor heatin
40、g system is composed of the specific thermal output q and the downward heat loss qU, see clause 8 of part 2 of this Standard. These circumstances taking into account, the design water flow rate mHof a heating circuit is calculated as follows: +=uuiuoWFHRqRR1cqAm (13) where (also see Figure A.5): cWs
41、pecific heat capacity of water; cW= 4190 J/(kgK)44) Using this value together with q in W/m2in equation (13), mHis provided in kg/s. BS EN 1264-3:2009EN 1264-3:2009 (E) 9 Roupwards partial heat transmission resistance of the floor structure (see equation (14) Rudownwards partial heat transmission re
42、sistance of the floor structure (see equation (15) istandard indoor room temperature in accordance with EN1264-2 uindoor temperature of a room under the floor heated room With respect to the thermal resistances indicated in Figure A.5, the following equations are valid: uuB;osR1R+=(14) ceiling,plast
43、er,ceiling,ins,uRRRRR+= (15) where: 1/ is the heat transfer resistance on the heating floor surface; 1/ = 0,0093 (m2K)/W R;ceilingis the heat transfer resistance on the ceiling under the floor heated room; R;ceiling= 0,17 (m2K)/W NOTE The calculation procedure above described on the basis of Figure
44、A.5 is to understand as a principle one. For other structures, an appropriate modification may be necessary. 4.1.4 Peripheral areas Peripheral areas AR, with an increased surface temperature (up to a maximum of 35 C) are generally situated along the outer walls of a room with a maximum width of 1 m.
45、 As described in clause 4.1.3, design of peripheral areas is based on the higher limit curve (F,max- i) = 15 K (see Figure A.1). In case a series circuit is formed with a heating circuit in the occupied area, the temperature drop in the peripheral area shall be selected, so that the flow temperature
46、, calculated from the lower limit curve, is not exceeded by entry of the heating water from the peripheral area into the occupied area. 4.2 Ceiling heating systems 4.2.1 Basic principles 4.2.1.1 Temperature difference between heating water and room For ceiling heating systems, the specifications and
47、 equation (1) given in clause 4.1.1.1 unchanged apply. 4.2.1.2 Characteristic curve For ceiling heating systems, equation (2) and the respective specifications given in clause 4.1.1.2, apply. The gradient KHis provided as a combined result coming from part 2 and part 5 of this Standard. Detailed inf
48、ormation about the procedure, see part 5 of this Standard. 4.2.1.3 Field of characteristic curves In principle, the specifications given in clause 4.1.1.3 also apply. With respect to the calculation method (see part 5 of this Standard), the field of characteristic curves should contain the values of R,Bspecified in clause 4.1.1.3, even though not all together are needed for practical application. BS EN 1264-3:2009EN 1264-3:2009 (E) 10 4.2.1.4 Limit curve Physiological limitations concerning the surface temperatures of ceiling heating systems depend on geome
